Diagenesis of Sedimentary Rocks (GEO82)
Description
This advanced course provides a comprehensive overview of the diagenetic evolution of sedimentary rocks and its impact on reservoir quality. The course combines theoretical concepts with practical petrographic interpretation of siliciclastic, carbonate, evaporitic and siliceous rocks, emphasising the recognition of diagenetic features and their relationship with porosity, permeability and fluid flow. Special attention is devoted to the interpretation of diagenetic processes using thin sections, core photographs and high-resolution digital images. Through numerous practical exercises and case studies, participants will learn how to recognise and interpret the main diagenetic products and reconstruct the burial and diagenetic history of sedimentary successions relevant to hydrocarbon exploration and production.
Course Level: Skill / Advanced
Duration: 5 days
Course Level: Skill / Advanced
Duration: 5 days
Designed for you, if you are...
- A geologist, petrophysicist, reservoir geologist, or reservoir engineer involved in hydrocarbon exploration and field development
- Someone interested in understanding how diagenetic processes control reservoir quality and heterogeneity
- A professional seeking practical experience in the petrographic recognition and interpretation of diagenetic features in sedimentary rocks
How we build your confidence
- Comprehensive overview of sedimentary petrography and diagenetic principles
- Integration of petrographic observations with reservoir characterisation
- Step-by-step interpretation of diagenetic processes from thin sections and core material
- Microscope sessions and digital image interpretation exercises focused on identifying cements, dissolution, replacement, compaction, recrystallization and fracturing
- Case studies illustrating the evolution of reservoir properties during burial
- Daily workshops and discussion sessions designed to strengthen interpretation skills and promote independent petrographic analysis
The benefits from attending
By the end of the course, you will feel confident in your understanding of:- The fundamental principles controlling sedimentary diagenesis
- The relationships between depositional texture, mineralogy and diagenetic evolution
- Recognition and interpretation of the principal diagenetic processes affecting siliciclastic, carbonate, evaporitic and siliceous rocks
- Identification of cements and their influence on reservoir quality
- Evolution of primary and secondary porosity during burial history
- Prediction of porosity and permeability evolution using petrographic evidence
- Application of petrographic observations to reservoir characterisation and hydrocarbon exploration
Topics
Introduction to Sedimentary Petrography- Basic concepts of sedimentary petrography
- Analytical methods and petrographic techniques
- Optical microscopy and digital image interpretation
- Petrographic description and Physical properties of sedimentary rocks
- Composition and classification of sedimentary rocks
Fundamentals of Diagenesis
- Definition and diagenetic environments
- Early diagenesis
- Burial diagenesis
- Deep diagenesis
- Diagenetic fluids and fluid-rock interaction
Main Diagenetic Processes
- Mechanical and chemical compaction
- Cementation
- Dissolution
- Replacement
- Recrystallization
- Pressure solution
- Dolomitization
- Fracturing
- Clay mineral transformations
Diagenesis of Carbonate Rocks
- Marine, meteoric and burial diagenesis
- Cement generations
- Micritization
- Dissolution and karstification
- Dolomitization processes
- Recrystallization
- Reservoir quality evolution
Diagenesis of Siliciclastic Rocks
- Mechanical compaction
- Quartz cementation
- Clay authigenesis
- Feldspar alteration
- Carbonate cementation
- Dissolution processes
- Evolution of reservoir quality
Diagenesis of Evaporitic And Siliceous Rocks
- Sulfate diagenesis
- Silica diagenesis
- Replacement processes
- Effects on porosity evolution
Porosity Evolution and Reservoir Quality
- Primary versus secondary porosity
- Types of secondary porosity
- Permeability evolution
- Prediction of reservoir quality from petrographic observations
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HOT Engineering GmbH Tel: +43 3842 43 0 53-0 Fax +43 3842 43 0 53-1 hot@hoteng.com
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